package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.UserLoginVO;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserMapperImpl implements UserService {

    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatProperties weChatProperties;
    //微信服务接口地址
    public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";


    /**
     * 微信登录
     * @param userLoginDTO
     * @return
     */
    @Override
    public User insert(UserLoginDTO userLoginDTO) {
        //调用方法
        String openid = getOpenid(userLoginDTO);

        //判断openid是否为空，如果为空表示登录失败，抛出业务异常
        if(userLoginDTO.getCode()==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }



        //判断当前用户是否为新用户
        User user = userMapper.selectByAppId(openid);
        //如果是新用户，自动完成注册
        if(null==user){
            user=new User();
            user.setCreateTime(LocalDateTime.now());
            user.setOpenid(openid);
            userMapper.insert(user);

        }
        //返回这个用户对象
        return user;

    }
    /**
     * 调用微信接口服务，获取微信用户的openid
     * @param userLoginDTO
     * @return
     */
    private String getOpenid(UserLoginDTO userLoginDTO) {
        Map<String, String> paraMap=new HashMap<>();
        paraMap.put("appid",weChatProperties.getAppid());
        paraMap.put("secret",weChatProperties.getSecret());
        paraMap.put("js_code", userLoginDTO.getCode());
        paraMap.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, paraMap);
        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");
        log.info("sss{}",openid);
        return openid;
    }
}
